Published October 1992
| Version v1
Journal article
Extraction and separation of Zr, Nb and Hf by Aliquat 336 and its mixtures with TOPO from acidic thiocyanate media
- 1. Utkal Univ., Bhubaneswar (India). Dept. of Chemistry
- 2. Institute of Nuclear Physics, Calcutta (India). Div. of Nuclear Chemistry
Description
Presence of thiocyanate ions results in appreciable extraction of Zr(IV) by Aliquat 336 from low aqueous HCl acidities, i.e., 0.1 to 4.5 M. The variation of concentrations of HCl, thiocyanate and Aliquat 336 greatly influences the extent of extraction. Mixtures of Aliquat 336 and TOPO result in synergistic extraction of Zr and Hf from acidic thiocyanate media, the extracted species being the disolvate with TOPO. By controlled adjustment of HCl, SCN-and Aliquat 336 concentrations, separation of Zr, Nb and Hf is possible. A maximum separation factor (DNb/DZr) of 3675 has been achieved under certain conditions. (author) 15 refs.; 4 figs.; 2 tabs
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 162
- Journal Issue
- 2
- Journal Page Range
- p. 289-298.
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 24056300
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- HAFNIUM COMPLEXES; NIOBIUM COMPLEXES; ORGANIC SOLVENTS; SOLVENT EXTRACTION; THIOCYANATES; TOPO; ZIRCONIUM COMPLEXES
- Descriptors DEC
- ANTITHYROID DRUGS; CARBONIC ACID DERIVATIVES; COMPLEXES; DRUGS; NONAQUEOUS SOLVENTS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PHOSPHINE OXIDES; SEPARATION PROCESSES; SOLVENTS; TRANSITION ELEMENT COMPLEXES